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Old 04-18-2008, 11:52 AM   #50 (permalink)
David A. Goldfarb
 
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Join Date: Sep 2002
Location: New York, New York
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Quote:
Originally Posted by Pbpix View Post
I have no clue about why Witch Hazel does the trick so nicely but at least it DOES work.. not only to help in emulsion to paper contact... but it seems to eliminate whatever chemical it is in some papers that causes that big green-black blotch. ( water will cause it too).. but I've never tried distilled water.
Witch hazel is the active ingredient in most over the counter preparations for the other kind of 'roids, so there may be a natural affinity there.

That is curious. I'm wondering if the astringent effect of the witch hazel causes the gelatin in the emulsion to "grab" the fibers in the paper and makes it stick better. The pH of witch hazel is about 3.0-5.0, so that is probably relevant as well.

Thanks for sharing your results. Not everyone is so generous with this sort of information.
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